166607099 has 2 divisors, whose sum is σ = 166607100. Its totient is φ = 166607098.

The previous prime is 166607039. The next prime is 166607137. The reversal of 166607099 is 990706661.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-166607099 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (166607039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83303549 + 83303550.

It is an arithmetic number, because the mean of its divisors is an integer number (83303550).

Almost surely, 2^166607099 is an apocalyptic number.

166607099 is a deficient number, since it is larger than the sum of its proper divisors (1).

166607099 is an equidigital number, since it uses as much as digits as its factorization.

166607099 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 122472, while the sum is 44.

The square root of 166607099 is about 12907.6372353735. The cubic root of 166607099 is about 550.2556376361.

The spelling of 166607099 in words is "one hundred sixty-six million, six hundred seven thousand, ninety-nine".